Looper-thread controller.



D-. S. SEYMOUR. LOOPERY THREAD CONTHOLLEI. APPLICAHON FILED NOV. 5. mm

Patented Feb. 20,1917;

2 SHEETS-SHEET! ;a citizen of the United StateQTresiding at Y Oak Park,in the county of Cook,

DUDLEY S.

snrmoun;

253;;app isalmammals; 1910; seriaimisaaaies To all whom it may mam;- Y zlaty ale ran,-

a .6 5 v Be it known that I, 'DUnLEr S. SEYMOUR, 'llnk 9"whicl1reeiprocated any.

Illinois, have invented certain anew Lful Improvements in Looper -ThreadControllers, of which the following isa description, reference being hadto the accompanying drawing and to the letters and. figures 10 i ofreference marked thereon.

The invention relates to newv and useful improvements inthreadfcontrollers, and

j illustration and .more especially to thread controllersused inconnection with a thread carrying looper An object of the invention isto provide a thread controlling mechanism which shall 1 positively takecare of the thread duringt the movements of the looper, I

releasing the thread as required in order" to 1 r 1 avoid the skippingof stitches and to assist in. making a comparatively tightstitch.

In the drawings which show ,b

one em odimentof t e invenf anism in p an view. l

- "Fig. 2 is a longitudinalsection through1 yao the machine.

elevation.

Fig. is'a viewpartly section,

Fig. 6 is a detail a a bed plate 1 mm which rises a standard 2 type, andis im'ounted on the end of a s aft 2 j- 2 looper .supporting shaft" 5is' oscillated I orioaizra'aiijrnriiois, Assists l jo nqrotr' srnc lananemia in i conrarm; or, CHICAGO, tr mmers,- A .coaron non or mmrzors..i

1., coizrnoLLi; it

' sficiagiiu iifprtemrs n. 1

State a of and use projecting arm 11, which is connectedby a link 12,'with a rock shaft 13. The rock 66 taking up and The take-up 17' iscarried bya sleeve 18 .up has a" forwardly way of" 920; The take -up' Iw 4 tweenjspacedjhrea'd Figure 1 is a sectional view throughthe casinshowing the cover-plate removed,

e 100 er and thread controlling mechshaft 5. "This arm'23 is mounted toOscil -latebetween tlread guides '1 f cated'between thefpulLofi and thetake-up 1 for-the looper thread, is athreadclam con 85 a ,gripping memkers 27 and 28 are secured to partly in section, show- 1 .ing t e pulloffand one of thethreadguides;- .-,therefor.' 1 I I y he loopen V1d edjWitha flat'side 32 so thatwhenthe 7 Ilooper 'supporting shaft .is'in the I,v H ;isliowninFigi-i, the flat portion 32 ofthe partly :in section,show- 9 ing the thread clamped, and the clamp fo'r operating the same. r

a A sawing, tth m -P fO the looper thread at the ex, l

wine rearward movement.

{2 8, and the 012 mping members 2 and 28 95 7 7 s a viewsimilartoFig. 6,show-, Vil'h fling t e take-up member at the iorward end of its strokelj3 The machine as herein shown, consists of? cillated, the-cant 31 willenga ethe member 28 and positive] yclamp 4 the clamping members" 27- and28. Asa

further. meansfi ir o -to release the threa 1 finger 35 cates back and;

ease ent with a cam'shoulderfifi'carried by v seem 9 a,

desired wayn Thelooper fsu'pporting'shaft is 'moved 1 endwise in orlerat'ogivetheloo r'ai needle j avoiding movament y meanso asleeve10',60 'which is molnted between spa d,. collars rigidly secured tothelooper supporting shaft. The sleeve 10 carries a downwardly 1 shaftl3carr. es an-arm 14, which-is connected to alinl: that maybe reciprocatedin any desired w: iy.. The sleeve 10 is held" from oscillation with thelooper by means'of the i guide 16,'which may be secured to the frame .70r in any desired way.

('see Fig. '5)' "vhich is rigidly mounted 'on theiloopersupporting shaft5. This'takeprojectingnose 19 and, a laterally, prujectingcam-s'hapedshoulder 'membe'r 12'--vibrates beui e 2 e. ull-oif ar [ll23-.i'scarriedby'aeollar 24 80 rigi y" -s"ecu"re1l to the loopersupporting 25- and 2e. Lo-

.sisting of spring members 27 and 28. hese a bracket 29 carriedhytheframe of the machine byaicrew '30. .A cam 31 carriedsupportingshaft 5, is pro- '90 position I1 1 cam'is adjacent the springclampinmember en' the loopersupportin'g'shaft 05-1; L 5

the t adjbetween ening the threadclam s ,I haVe mGuntedon' t a sleeve 10a'plaie 33 whicheari"ies"an"arm 34' havingarlat arally projecting; camffaced (see-Fi 1); This-arm 34 recipro-ma gorth' with the-looper sup,- 4{I porting shaft, in 1d will'be brought into entake-up is moved intocontact with thelooper thread, taking up all slack in thelooper'idrawing the'thread between-the in Fig. 7, that is,

the, clamping member v27. This movement, vof the frame 34 through thefinger- 35 will crowd the clamping member 27 away from the clampinmember 28, and entirely release the thread om all clampling action. IThe. thread is led'irom e supply throug a tension 37 and thence thro iguides 25 and 26 ofthe pull-o clamping members 27 and 28, then throughthe t read guides 21'and 22 to the take-up. The thread is then ledthrough a threat} guide 38 underneath guiding pins 39 40 and through anopening 41, to the looper.

A bracket 42 at the forward end of the opening 21 is provided guidingthe looper thread to the looper.

In the operation of looper is.' at

I in the position shown 5. Theneedles atthi's'time are also thread, andeye of the'looper. and'the material taut, so as to allow'the needles topass between. this portion of the looper thread and the body of thelooper. "As soon as the points of the needles are well below the.needlefthread, the looper take-up and is entirely releasedso t lackers-sd/ .3m after the previous needle loops are shed from the looper, so thatsaid'nee'dle loops run up closeto the under surface of to the looperstrain.

. When the looper is stroke, the take-up is in the extreme end of thecam shoulder on'tlie underside of the take-up." ,As the'looper startsforward, the cam shoulder will again engage the thread, taking up aportion of the slack before the thread slips over the cam .During thetake-up, the looper is being retracted and is-. therefore, at itsextreme e v Fig.

a the t read clamps so shoulder, and is released forward movement ofthe 1. The arm 34 controlling the thread clamp,'--is' therefore,

entire forward As the take-up starts to retract, ing forward and; hasmoved the a 34, through-the cam drawn therefrom to the pull-ofi';

h the thread-- between the a take-up looper with a curved face for.

my device, when the. the forward end of itsstroke, the take-up is 20"upper-end of their-stroke. 'A's'the' loopershaft oscillates toretractthe. looper, the

in Fig. at the.

' tion to the bracket supporting the may be e the ma terial, while-thelooper' thread is free fromat the: rear end of its the position shownwith the looperthread at it as viewed n whereby in suchposition astorelease theclamping members 27 and 28, and; allow the thread to'begripped during the" I movement of. the'ctake-up' The entire action ofthe takeup therefore, at}

.this time is upon-thelooper 'the'thread clamp and the loopenfl 1bination', hread guides, fa pivotedtake-up member comprising an ifoverhanging a thread between the loo rfis movv e to its extreme righthand position, as viewed Fig; I, and -chin c mprising finger 25, opens.that, thread may;

\ the 'takep is moving forward and the tension 37. It willthus seen thatI have provideda'pullii for pulling thread through the tension'from thesupply, and a 'for controllindgthelooper thread between the pull-off anthe looper, and also a thread clamp whichis'loca between the clampthethread at the pro the action ofthe pull-off an the take-up on thelooper thread are substantially independent of each other.

The tak'e up' which especially-ads ted for. a machine having a cyindrical be plateor work support, as its field of operation is extremelysmall; The

essential features' of the take-up member;

consist'ii the shank portion which is secured tothe loope'r shaft andthe overhanging por-' which ifformed with the'iconcentric v move veryclose.

thread guides and the concentric under surface which resurface: whichallows it to and pull-ofi' and which operates to er time so that Ihave-constructed is 3 as, f

tains the thread in proper relation to the face w ich'takes up andreleases o t departing from the spirit of my in-. vention.-'

' take-u ,member, and the projecting"eam sur-' j the thread during eachoscillation of the take-up .inemthread slips ofl from the cam shoulderon {he be .Itwill be obvious that minor changes'in the details ofconstruction may." made.

Ha i g thus 'aaa uiyaaaaaaya:

vention, what nation, thread comprising an her face which during eachoscillation of the ta k e ,;u p memclaim asjnew and desire-to f secureby Letters Patent, is:- 'i 1. A thread controller including/fin c'ombi-Qguides,- a. take-up member overhanging a'rmfh'avingj a j 1 threadengaging cam projecting fromits in;v

takes up and releases thread I 2. A thread controller including incombi-M, nation, thread guides,1a pivoted take up I member comprisingan;- overhanging arm, ace' on its under face:

tained in proper lation to the take i'ip meniben'arid a'cam 'sur- :facefor enga having a' concentric an the thread is g the thread.

. -3.- A threa controller including the outer face-of which issubstantial centric whereby itpmay, 'o space andth erate in a small 41Athread controller I a's'hank-ada ted to beatarm,

con- Y e, inner faceio which has a pro- 1 f jectingcam threadengaginsurface.)

may operate in a small space j ecting thread engagin'gsurf face. y 5. Athread controller comprising a shank adapted to be attachedto an.oscillating ace 'on its inner member, and an overhanging arm,said'over--* hanging arm having a concentric'outer surface whereby itmay operate in a'small space,

. and a concentric inner. surface-at its -free end whereby the thread isretained in proper relation to the take-up member, and a proejectingZthread.

inner surface for engaging the 6. A-thread controller including incombination, thread guides, an oscillatln shaft,

a take-up member secured to said oscillating a shaft and adapted tooscillate between said i thread guides, said take-upj membercompris-,,relative to the atake-u f' thread assi througfiand un erneiifi I i besubstantially straight, at the extremes of e-up member,- and a" ing-anoverhanging arm cut away on its under surface, said guides beingso-disposed membjer' "that the" the thread guides the overhanging arm,will.

oscillation" of the ta PrQJecting cam portion for-"engaging-"the during,the oscillation of said take-up mer'm' thread and takingup and releasingthe same '7. j thread coiaouer including in combi nation, an oscillatingshaft, a take-upmem 1 b m unted on said oscillati'n' 7 esbetween whichsaid ta d 'oscillates,said take-up -meinber. havingi'acut 85. 'l a ngf;aft-. throughywhich the,

' i e. b n

taking up" and releasing the thread during-- e -i.up j'member awayportion between'itsuouter surface and.

thread is ada passfrom'ione threa'd eluding a projecting-cam-.forjeiigaging and the oscillationofthe take-up. member.'- i.-

meansi for'oscillating said 10o ershaft'a'nd' p moving the sameendwise,' "a 45,

8. The? combination of ,a --lo0per shaft;

ooper carried thereby,"actake-up for-th'elooper thread inl ,"cluding anoverhanging. take-up arm mount- {ed on said looper shaft, andoscillating there J with, thread guides. arranged on each side of saidtake-up member, said take-up member having aconcent-ric outer-surface, apart of iith e 'under faceof. said overhanging arm, be- "ing concentric,I'- a nd afthreadi cam sha ed member operates, and" a, tthreadclampinfor taking u and releasing thethread uri:*'.f -.ingt the osciljationrof-said take-up'member; 9: Afsewingmachine includin Qin combination, a y looper-supporting shai t, I mounted. thereon, by. saidlooper supporting shaft, lsaid meme 1B,. a take-up member carried 1:comprlsingan overhanging ,having fazthread-e aglngcam'projeetingtherefrom thread 'gui as between awhichfgsaidj:take=u1i device between?said ta'ke-up -member an the su -trolle a fjwpm and a cam pro-'billlltlOIl, a lo'oper-supportmg shaft, a looper mounted thereon, atake-up member carried by said 1001 ear-supporting shaft, said memarmhaving shaft, thread er, said I cut away portion in-Q 1y, saidclampingdevi'ce "being con: f

the movements'of the looper shaft,

10. sewing machine 'incl-uding in com-eber comprising anoverhanging athread-en gaging-cam prqefetin therefrom, thread' guides between whichsaid -takeup me! iber operates, a thread-clamping device bi tween saidtake-up member and the supply, and a cam carried by thelooper "shaftfor'causing the "clamping device to.

clamp the It oper thread.

11. A sewing machine includi mounted thereon, a take-up member carriedher comprising overhangingarm having" "there-Q from,threadflguide'sbetweenwh ch. i,;said a wake-up mejm ber'operatega threadclamping,

looper' three 1, and means; carried by the looper shaft .for' engagingand separating lthe sclamping members ofthe clamping fdevice. a. 12.Asewi'tig machine including in-co mbi F nation, 'a 100 o'eresupportingshaft, a 1o0per,f

device "betwi :eri I sa d -:'take up; vmember, and the supply, a camcarried by the loo ershaft for 'causingt ie-clamping'device to 0 amp theathread-con trolling device; for 'the looper thread comprising atake-up,and threadincombination, a 10 per-support1ng sha t, a looper' so by saidloop er supporting shaft, said mam-m clampin members, a foam carried,bythe Y lo'oper: s aft for causing said memberst clamp the tl read whenthe shaft. is oscil- 1 ,lated, and a nember carried by saidllooper 14. Athree d clamp leased, and a second cam for positively.

forming mechanism including saidmembers,

rating said members to release the thread; I. -v-

15. In a sewing machine, having stitch 1 w an oscillating andrecifirocating looper shaft," a take-up member I the looper sh aft,thread guides, a bracket supportlng the same, said take-up memberhavingfan ove rhanging portion formed with aving a shankportion securedto a concentric-u pper, surface located and movirig close to.the"=bracket-supporting the oscillation: of the takempmember;

'threadguides andz'hav'ingia concentn un-Q I flderj mass-i:vhich-gfretains the ,thread n 3?; .1 I xg ep ri' e e :5 7 ek me e a 2 swng a" r)'iect ing;cam-"slirfacefl which takesu'p anieleases'thethread'dliringeach .J ,16.=Asewing1machine -inc1u5ling.combi- 4.,9-

nation a standard, a cylindrical work support extending from saidstandard, a looper shaft mounted in said work support, a looper operatedby said shaft, means for oscillating said looper shaft, and a looperthread controlling mechanism located in said work support, saidmechanism including an oscil-- lating member mounted on and movable withsaid looper shaft, and thread guides for holding the looper thread inoperative engagement with said oscillating member.

17. A sewin' machine including in combinationa' stan ard, a cylindricalwork support extending from said standard, a looper Shaft mounted insaid work support, a looper operated by said shaft,'means foroscillating said loopershaft, and a lqopen trolling mechanism located insaid work support, said mechanism. including an oscillating membermounted on and movable with said looper shaft, and thread guides forholding the looper thread in operative engagement with said oscillatingmember, said oscillating member having a cam shaped thread engagingsurface which takes up and releases, thread during the said member ineach direction.

In testimony whereof I affix my signature,

' in presence of two witnesses.

- DUDLEY s. SEYMOUR.

Witnesses C. MONEIL, A IB. Cm'rnmn.

movement of

